Home / 56,095.26-84,121.02-21,015.78

Finding the Fourth Proportional to 56,095.26, 84,121.02 and 21,015.78

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Solution

The fourth proportional to 56,095.26, 84,121.02 and 21,015.78 is: 31,515.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,095.26 : 84,121.02 = 21,015.78 : x
  2. Step 2: Convert to fraction form
    56,095.26/84,121.02 = 21,015.78/x
  3. Step 3: Cross multiply
    56,095.26x = 84,121.02 × 21,015.78
  4. Step 4: Simplify right side
    56,095.26x = 1,767,868,849.70
  5. Step 5: Solve for x
    x = 1,767,868,849.70/56,095.26
  6. Step 6: Final answer
    x = 31,515.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.